Wrong fuel in a Mercedes E250 CDI? Petrol in your Diesel Mercedes?

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Mercedes Fuel Drain


Filling Petrol in a Diesel Mercedes is a regularly occurring mistake to make. And what you want to do about it is based on an assortment of factors. Assuming you want to find out what it is advisable to do about it then read on.
These are the most important factors to take into consideration whenever deciding whether or not to get it drained:

  1. Exactly how much Petrol have you put in the Mercedes, taking into account that the fuel capacity of the Mercedes E250 CDI is in most cases around 59 litres?
    1. A tiny amount of Petrol, less than 2.95 litres of Petrol in a Diesel E250 CDI will quite often not really be a massive problem. Experience has demonstrated to us that anything less than 2.95 litres (which is about 5% of the overall fuel tank volume) is very often able to be completely diluted through completely topping up the remainder of the tank with Diesel.
      It's rather rare to come across a car suffering from issues due to below 5% incorrect fuel contamination. Keep in mind that it's rare - in no way impossible to encounter. There are actually some vehicles that will not stand any degree of contamination in the slightest.
    2. In between 2.95 and 5.9 litres of Petrol in the Mercedes (5 to 10%) is really a 50/50 scenario. Our experience has revealed that as many people get away with it as those people who break down. Any time you are deciding upon whether or not to chance it and simply fill it up remember that it is very much like wagering your car on black - you have a 50/50 chance of it working.
    3. Anything in excess of 5.9 litres of Petrol in your Diesel E250 CDI ought to right away be removed since your probability of driving with this level of contamination is more than likely below one in fifty - seriously huge odds.
  2. Put some Petrol in a Diesel Mercedes and drove it: Have you detected any performance troubles since putting the wrong fuel in your E250 CDI? In that case, get it drained no matter the quantity of Petrol or even the contamination ratio. Still driving an automobile that is starting to suffer the effect of wrong fuel contamination will definitely cause even more harm being done to the fuel system.
  3. Would you like assurance?
    In that case get it emptied. No matter the contamination percentage, there is always some amount of risk in connection with driving a Diesel vehicle on Diesel contaminated with Petrol. Likely consequences of driving on the wrong fuel can include the motor refusing to start, running lumpy, lack of power, degradation of the high-pressure pump, damaged or blocked injectors, and so forth. These are a few of the most common Petrol in Diesel signs and symptoms, and should you recognise any of them stop and have it drained immediately.

Avoid getting any unqualified mechanic to try to repair your car. We are Mercedes specialists and possess the credentials and practical experience required to ensure that you are back on the road with a minimum of hassle or trouble.

Put Petrol in a Diesel Mercedes

By mistake put Petrol in a Diesel Mercedes? Or even put contaminated fuel in your Mercedes E250 CDI?

Give us a call for Assistance & Guidance

Contact us and receive genuine guidance and practical help for your specific circumstance

We come out and do the fuel drain

We can reach you to carry out the complete contaminated fuel retrieval & purge right there on scene

All done & You Get Moving Again

As soon as we are done you can get back on the road and get on with your day

Wrong Fuel Drain Specialists

We are the primary wrong fuel drain specialists in the UK, having countrywide cover, for Mercedes motorists in particular. We predominantly fix:

  • Unleaded petrol in your Diesel Car
  • Diesel in Unleaded Petrol Auto
  • AdBlue fuel contamination
  • Water fuel contamination

We are Mercedes specialists and have successfully drained thousands of Diesel Mercedes vehicles. No matter if it is at the roadside, on a filling station forecourt, or even at your house, we can get you moving again.

The Process

The procedure of draining Petrol from a Diesel vehicle is fundamentally similar for most vehicles. Of course it can differ a little as every make has their particular distinct fuel system. However it still essentially follows the following guidelines:

Petrol in Diesel Mercedes

Fuel Drain

Empty the Fuel Tank

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Wrong Fuel Drain Mercedes

System Flush

Clean out the fuel lines & pumps

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Petrol in Diesel Drain Mercedes

Vehicle Restart

Get the car up and running again

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Petrol in Diesel FAQs

When someone has put Petrol in a Diesel car they have a few very common questions. So we have compiled a list of the most Frequently Asked Questions for you

I put Petrol in a Diesel car and drove it. What do I do?


Turn off the car as soon as possible and call us. Continuing to run a vehicle on the wrong fuel can potentially damage it. We will be able to give you advice and assistance based on your circumstances

Will driving a Diesel car on Petrol cause damage to it?


It can. However, if the problem is caught and remedied quickly the risks will be minimal. Of the 1,500 vehicles we attend every month, less than 0.5% have suffered and substantial damage requiring parts replacement.

How much Petrol can I get away with in a Diesel car?


The safe answer is none. However you might be able to get away with a very low contamination ratio. That being said, we always highly recommend draining anything over a 5% contamination ratio asap.

I know about petrol in diesel, but what about Super Unleaded?


Putting Super Unleaded, or Shell V-Power, BP Ultimate Unleaded, etc, will have the exact same effect as putting regular unleaded petrol in your diesel car and will need to be drained out and flushed.

Will getting you to do a fuel drain void my warranty?


No! The EU Block Exemption Regulations clearly state that "the work can be carried out by as long as that garage uses manufacturer approved parts and correctly follows the manufacturer's service schedule."

Can I top it up with Diesel and add some 2-stroke oil?


This might work on some vehicles in some cases, but in the majority on instances it won't and you risk damaging the Lambda sensors as well as fuel pump and injectors, just as a regular misfuel.

Get in Touch

If you have any questions or require assistance please Call us!
We are able to get you on the road once again.

24 hour Mercedes Helpline

0333 366 0103

Our Business Office

Fuel Fixer Ltd, Linx House, 147 London Road, East Grinstead, RH19 1ET

Weekdays: 9am to 5pm

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